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对一榀1/3比例的半刚性钢框架内填钢筋混凝土剪力墙混合结构试验模型实施了循环加载试验,在此基础上对结构的破坏机理进行了分析;提出了基于塑性理论的侧向极限荷载的简化计算方法,其中考虑了钢框架与剪力墙的相互作用、半刚性节点、组合栓钉及斜向压杆力的影响;利用ANSYS建立了非线性有限元模型;通过试验值、塑性理论值及有限元值的比较,塑性计算结果较稳定,低估实际承载力7%~8%,表明简化塑性分析方法是可行的;综合研究结果,进一步揭示了结构的破坏机理。
The cyclic loading test was carried out on the test model of RCS structure filled with 榀 1/3 of the semi-rigid steel frame. On the basis of this, the failure mechanism of the structure was analyzed. The plastic theory based lateral The simplified calculation method of the ultimate load is taken into account. The influence of the interaction between the steel frame and the shear wall, the influence of the semi-rigid joints, the combined pegs and the diagonal strut force are considered. The nonlinear finite element model is established by ANSYS. Compared with the theoretical value of plasticity and the finite element value, the plasticity calculation results are stable, underestimation of the actual carrying capacity of 7% ~ 8%, which shows that the simplified plasticity analysis method is feasible. The comprehensive research results further reveal the failure mechanism of the structure.